pradeepkaushal9518 wrote:when automatic teller machines were first installed in 1980s,bank officials promised they would be faster,more reliable,and less prone to make errors than their human counterparts.

a.they would be faster,more reliable , and less prone to make errors.
b.they would be faster,more reliable and that they would be less prone for making errors.
c.the machines would be faster,more reliable, and less prone to make errors.
d.the machines would be faster,more reliable, and less prone to make errors
e.faster,more reliable, and that errors would be less prone

plz explain whats wrong with option A

pradeepkaushal9518 wrote:when automatic teller machines were first installed in 1980s,bank officials promised they would be faster,more reliable,and less prone to make errors than their human counterparts.

a.they would be faster,more reliable , and less prone to make errors. (subject missing...m/c`s are faster or bank officials)
b.they would be faster,more reliable and that they would be less prone for making errors. (repetation of subject)
c.the machines would be faster,more reliable, and less prone to make errors. (right ans)
d.the machines were faster,more reliable,and errors would occur much less
e.faster,more reliable, and that errors would be less prone (incomplete sentence)

plz explain whats wrong with option A